Rotary brush



E. E. CURTIS ROTARY BRUSH Aug. 4, 1931.

Filed Feb. 2, 1928 INVENTOR. 667204 it] if. Cari/6 A TTORNE indicated bythe line provided with outstanding ton Patented Aug. 4, 1931 UNITEDSTATES PAT ENT OFFICE EDWARD E. CURTIS, 01 LAKEWOOD, OHIO, ASSIGNOR TOTHE OSBORN MANUFAGTUE ING COMPANY, OF CLEVELAND, OHIO, A CORPORATION OFOHIO ROTARY BRUSH Application filed February 2, 1928. Serial No.251,825.

15 the various forms in which the principle of the invention ma beemployed.

In said annxe drawings Fig. 1 is a side elevation of an embodiment ofthe invention; Fi 2 is a section taken as %III, Fig.'1;,and Figs. 3 and4 are detailsections taken as indicated by the lines III-III and IV-IV,Fig. 1.

The brush tufts 1, preferably set in a twist, are strung on a wireholder 2. In the detail 25 form shown, the ends of the wire holder arebrought together and secured as a ring, inany suitable way, for exampleby welding. Lateral plates are provided and such plates may take theform of side plates 3 and 4,the one es 5 and the other withcorresponding opemngs or slots 6. These plates are assembled with thewire in such a position that the tongues lie just outside of the wireand also enter between groups of the tufts 1, and are secured in finalposi tion by clinching down the ends of the tongues projectingthroughthe slots on the far side. With the ends of the tongues thusclinched down, the entire assemblage is secure.

4 around the wire holder; and the assembled plates provide means forapplying the brush to a driving arbor. With such a compact construction,thrusts in the particular directions imposed in operation are providedfor and theconstruction as a whole affords a secure and reliablearrangement of brush elements such as to be well adapted for severeusage under high speed operation.

Other modes of applying the principle of the invention may be employed,change bemg made as regards the details disclosed, provided the meansstated by any of the following claims, or'the equivalent of such, beemployed.

I therefore particularly point out and distinctly claim as my invention:

1. a A rotary brush comprising in combination a central ring composed oftwo mating annuli each having a channel about its inner periphery, aplane annular surface immediately beyond said channel and a second planeannular surface beyond said firstnamed annular surfaces and offsettherefrom a distance equal to the depth of said channels, one of saidsecond-named surfaces having vtongues radiallydisposed in the directionof their width and the other said surface having radial slotscorresponding thereto, said tongues being of suflicient length to passthrough said slots and be bent over at their ends, said two last-namedplane surfaces defining between them a. channel peripherally open, acircumferential wire in said channel inward of said tongues, a pluralityof radially disposed tufts of bristles seated in said channel, saidbristle tufts being bent upon themselves over said wire.

2. A rotary brush comprising in combination a central ring composed oftwo mating annuli each having a channel about its inner periphery,aplane annular surface immedlately beyond said channel and a secondplane annular surface beyond said firstnamed annular surface and offsettherefrom 'a'distance equal to the depth of said channel,

one of said second-named surfaces having tongues radially disposed inthe direction of their width and the other said surface having radialslots corrfisiponding thereto, said tongues being of s cient length topass through said slots and be bent over at their ends, said twolast-named plane surfaces defining between them a channel'peripherallyopen, a circumferential wire in said channel =inward of said tongues, alurality of radially disposed tufts of brlstles seated in said channel,said bristle tufts being bent upon themselves over said wire andtwisted, said tongues laterally supporting said tufts 15 at the base.

Signed by me this 30th day of January,

' EDWARD E. CURTIS.

